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Edit this profileWhere to find John Mirro, MD
- Merrillville location main office
101 E 87Th Ave Ste 420, Merrillville, IN 46410 - Hobart location
7895 Grand Blvd, Hobart, IN 46342
About Dr. Mirro
John Mirro, MD is a healthcare provider in Merrillville, IN specializing in gastroenterology. John trained at Indiana University School of Medicine, graduating in 1972. Medicare claims data shows John provided 50 services to 50 patients. The services billed most often include diagnostic exam of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and biopsy of large bowel using a flexible endoscope. This provider record is associated with NPI 1689678955.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (219) 758-5008
- Email not available
Practice Locations
101 E 87TH AVE STE 420
Merrillville, IN 46410
7895 Grand Blvd
Hobart, IN 46342
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
- Acute pancreatitis
- Gallstones
- Pancreatic cysts
- Primary sclerosing cholangitis
Colon and anorectal
Esophagus and swallowing
- Barrett's esophagus
- Eosinophilic esophagitis
- Esophageal stricture
- Esophagitis
Functional bowel and motility
- Chronic diarrhea
- Fecal incontinence
- Small intestinal bacterial overgrowth
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
Bowel & Colon
Digestive Symptoms
- Constipation
Gallbladder & Bile Ducts
- Blocked Bile Duct
Procedures & services
Most searched procedures
- Colonoscopy
- Endoscopy
- Gallbladder removal
- Hernia repair
- Liver biopsy
Lower endoscopy
- Colon polyp removal
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Upper endoscopy
- Endoscopic submucosal dissection
- Esophageal dilation
Capsule and physiology testing
- Anorectal manometry
- Capsule endoscopy
- Esophageal manometry
Diagnostic Testing
- 24-Hour Acid Reflux Test
- EUS-Guided Fine Needle Biopsy
- H. Pylori Breath Test
- SIBO Breath Test
Liver procedures
- Esophageal variceal banding
- Liver elastography
- Paracentesis
Treatments
- Stool Transplant
Procedures Most Often Billed to Medicare
50 services · 50 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
23 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
14 | Less often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
13 | Less often than most peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterologists in Merrillville 4
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Indiana University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1972 at Indiana University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of large bowel using a flexible endoscope 7
Providers in IN who bill this service to Medicare most often.
Common questions
What does Dr. Mirro specialize in?
Dr. Mirro is a gastroenterologist in Merrillville, IN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Mirro located?
Dr. Mirro is listed at 101 E 87Th Ave Ste 420, Merrillville, IN 46410. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mirro's phone number?
The number on file is (219) 758-5008. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Mirro?
Dr. Mirro's National Provider Identifier is 1689678955. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Mirro go to medical school?
Dr. Mirro attended Indiana University School of Medicine, graduating in 1972. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Mirro have?
Dr. Mirro has 54 years experience. Calculated from a graduation year of 1972, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Mirro do most often?
According to Medicare billing data, Dr. Mirro performs procedures including diagnostic exam of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of large bowel using a flexible endoscope. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Mirro's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mirro. If this is you, claiming it is free.
Guide.md
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